In a new affidavit, Asia McClain has once again vouched for the Serial subject, insisting she was with him at the time the state claims he murdered his ex-girlfriend, Hae Min Lee, according to documents obtained by PEOPLE.

After Syed's arrest, McClain wrote him two letters in which she said she remembered speaking to him at the time he supposedly killed Lee. But those letters never came to light at either of Syed's two trials and McClain has said she was never contacted by Syed's attorney, the late Cristina Gutierrez.